Brake mechanism.



Patented Mar. ll, I902 W S. ADAMS. BRAKE MECHANISM.

(Application filed Apr. 95, 1901.)

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: Norms PETERS co. PHOTO LI+HOH wnsmne'ron n c Patented Mar. H, I902.

W. S. ADAMS.

BRAKE MECHANISM.

(Application filed Apr. 26. 1901.)

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"larly to brakes employed on pivotal trucks U IT D STATES nrnN'r Prion.

WALTER S. ADAMS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO JOHN A.BRILL, OFPHILADELPHIA, PENNSYLVANIA.

BRAKE MECHANISM.

SPECIFICATION forming part of Letters Patent No. 695,361, dated March 11, 1902. Original application filed December 18,1900, Serial No.'40,238.Divided and this application filed April 25, 1901.. Serial To all whom,it may concern.-

Be it known that I, WALTER S. ADAMS, a citizen of the United States, anda resident of the city of Philadelphia, county of Philadelphia and Stateof Pennsylvania, have invented certain new and usefulImprovements inBrake Mechanisms, of which the following is a specification.

My invention relates to improvements in brake mechanisms or apparatusfor car-trucks of the class recited in my application for LettersPatent, Serial No. 40,238, filed December 18, 1900, of which thisapplication is a division.

Considered in some of its aspects, my invention may be said to relatemore particuand as to others as being especially adapted to the outsidesuspension motor type of truck that is,where the motor is carried mainlyupon the truck-axle with its free end suspended. from the end of thetruck-frame outside the wheel-base, and in still others as beingapplicable -to single and double motor trucks.

It has been found troublesome in former mechanisms and apparatus of thisgeneral type to maintain a proper working connec tion between the mainbrake-lever carried by the truck and the rod that runs to the. source ofpower on the car-body when the car is on a curve by reason of thedifferentiations of the center lines of the truck and car-body.

It has been also very difficult in the suspension-motor type of truckto-provide a suf. ficient clearance between the brake mechanism and themotor and still maintain its central and stable point for theapplication of the brake-power. Again, grave difliculties, have beenencountered in construction of brake mechanisms which canbe used with atwo-motor truck-that is, theone with a motor at each end for eachaxle-and which may be readily applied to asingle-motor truck on accountof the'equal'pressure required in one caseupon the-brake-shoes and theunequal pressure required. in the other case. This adj ustability, ifattained, has only been had through great complexity of parts and theutilization of space otherwise necessary for the mounting, andoperationof the motor.

(N0 model.)

and economical manner.

My present invention therefore resides in the construction andcombination of parts hereinafter described, and finally pointed out inthe claims, cross-reference being had to my prior application.

In the drawings forming part of this specification, Figure 1 is a planView of a doublemotor truck having myimproved brake mechanism appliedthereto; and Fig. 2 is a longitudinal sectional elevation of the samesubstan tially on the plane of the line m 00, Fig. 1.

In the figures, l and 2 denote the wheels and axles; 3, the sides of theframe of the truck which contain the inverted-U-shaped which areconnected by angle-iron cross-bars or end pieces 8 8, which are curvedoutwardly at 8 to provide clearance for the suspension of the free endof the motor thereon, the other end of the motor being supported uponthe axle and being geared thereto in the'usual way. At 9 are the usualbolster-transoms, which in this instance are secured to the brackets 3,formed integrally or otherwise attached to the side frames 3.

The brake mechanism or apparatus may be suspended from the frame in anydesired 1nanner,b'ut preferably from the transoms and the pieces 8.Again, the means employed for suspension may be varied at will; but Iprefer the liuk form, as herein shown and described.

'Referring to the figures, each set ofbrakeshoes 18 are fixed on thebeams 17, which shoes are suspended on the end pieces 8 by links 19 inthe usual way. These beams 17 are swung back and forth to apply orrelease the shoes, preferably through the medium of the brake-rods 16,which ext-end from the brakebeam, preferably adjacent the shoes, whichbeams have enlargements 17 to firmly re ceive the rods and which arecurved to conform to the curve of the cross-bars 8 to clear the motor.'These rods extend inwardly toward the center of the truck 'and arepivotally secured at their inner ends to the transversely-disposedequalizing-bars 22 22, having eyebolts 22 adjacent their ends and whichare pivotally hung from the transoms 9 by the links 21, which are inturn supported from the strap-brackets 20, secured to the transoms, thelinks pivotally engaging the eyebolts.

Upon a pin 24, secured to the bracket 22 at the center of theequalizing-bar-22, is pivoted an upwardly-extending brake-lever '25,

vwhich is the main brake-lever and which is located, as shown, close tothe center of the truck and upon, or substantiallyso, the longitudinalaxis of the truck, to the upper end of whichis connected by a pin 25 therod 26, running to the source of power on the carbody.

Pivotally suspended from the central portion of the transom by means ofthe straphanger 12 and pin 12 is a pendent equalizing-lever 12, providedwith a series of holes 13 along its length, the lower end of the leverbeing secured to the equalizing-bar 22 by the pin 23, held in ajaw-plate 23, which in turn is secured to the equalizing-bar. Aconnecting-rod extends between the levers 12 and 25 and is adjustablyconnected to them in any desired manner; but as shown it. is pivoted bythe pin 15" at one end to the lever 25 near its fulcrum, and at itsother end it is adj ustably attached to the lever 12 by the pin 14 andholes 13. The function of these various holes 13 is to be able to causeequal or different pressures upon the two sets of brakes. When twomotors are used, equal pressure is desirable, and when but one isemployed unequal pres= sure is desired. This feature of adj ustabilityis desirable in the brake for a double-motor truck, especially when itmay be required for exigencies of service to employ but one mo-.

tor, take up shocks, and other often-prevailing conditions. To obtainone or the other in this mechanism, it is only necessary to adjust theconnection of the equalizing-lever and the connecting-rod15,a'nd thusthe brake can be readily suited to one kind of truckby the simpleadjustment referred to. clear that this adjustment can be had upon thelever 25 in the same way as upon the lever 12. It will be noticed thatthis arrangement and construction allows the power end of thebrake-lever 25 to be located on the longitudinal axis and substantiallyat the trans- It is ters Patent, is-

1. The combination with a car-truck having bolster-transoms, outsidebrake-shoes for the wheels, beams'connectin'g the shoes for each pair ofwheels and suspended from the ends of the truck-frame, aplurality ofequalizing-bars each connected with one of. the brake-beams and eachindependently supported from the transoms, an upright main brake-leverfulcrumed near its lower end to one of said equalizing-bars, and to theupper end of which power is applied .t-o'operate the brakes, anequalizing-lever pendentfrom one of the transoms and connected with theother equalizing-bar, and means connecting the lat ter lever with themain brake-lever whereby both sets of shoes are simultaneously operatedfrom said main brake-lever.

.2. The combination in a pivotal car-truck,

-of outside sets of brakeshoes'and beams, an

upright brake-lever, a plurality of transverse equalizing-bars betweenthe beams, an intermediate equalizing lever, an intermediate connectionbetween the bars, said lever and beams, the power end of the brake-leverbe= ing substantially at the center of the truck.

. 3. The combination in a pivotal car-truck, of outside sets of brakeshoes and beams, an upright brake-lever, a plurality of transverseequalizing-bars between the beams, an intermediate equalizing-lever, anintermediate adj ustable connection between the bars, said lever andbeams, the power end of the brakelever being substantially at the centerof the truck.

4. The combination in a pivotal car-truck, of outside sets ofbrake-shoes for the wheels of the truck suspended from the framethereof, beams connecting the shoes of each set, a plurality oftransversely-disposed equalizingbars suspended from the frame whichoperatively connect with one of the brake-beams, an upright mainbraking-lever to which power is applied to operate the brakes fulcrumedon one of said equalizing-bars near the center thereof, and meansconnecting this leverwith the other equalizing-bar.

5. The combination in a pivotal car-truck, of sets of brake-shoes forthe wheels outside the wheel-base and suspended'from the ends of thetruck,brake-bean1s connecting the shoes of each set, a' plurality oftransversely-extending equalizing-bars suspended from the truck-frameadjacent its center, means for connecting each end of said bars to oneof the brake-beams, an upright main brake-lever ICG fulcrumed 011 thelatter bar near the center thereof, an equalizing-lever fulcrumed at itsupper end on the truck-frame, and means connecting its lower end withthe other equalizing-bar and the equalizing-bar with the otherbrake-beam, and a connecting-rod from the equalizing-lever tothe mainlever.

6. In a brake mechanism, the combination of a brake-beam, shoes carriedthereby and adapted to press against the wheels outside the wheel-base,a pluralityof transversely-extending equalizing-bars, rods extendingbetween the beams and said equalizing-bars adjacent their ends so as toprovide room between them for a motor, a brake-lever to which power maybe applied connected with one of said equalizing-bars, and meansconnecting the other equalizing-bar with said brake-lever.

'7. The combinationwith a car-truck frame, brake-beams adapted to beswung from the frame, brake-shoes thereon, a plurality oftransversely-disposed and parallel equalizing-bars swung from supportsdisposed transversely of the frame, rods connecting each of said barswith each of said beams so as to provide clearance between them for amotor at each end of the truck, a braking-lever to which power isapplied for operating the brakes piv oted at one end to one oftheequalizing-bars, and a connecting-rod pivoted to said lever and itsother end connected with the other equalizing-bar.

8. The combination of a car-truck frame, brake-shoes forthe wheels,beams connecting said shoes, a plurality of transversely-extendingequalizing-bars suspended from a transverse member of said frame, a mainbrakelever fulcrumedon one of said bars to which power is applied tooperate the shoes, means connecting the ends of the equalizing-bars withthe respective brake-beams, said means being spaced apart to provideclearance for.

a motor, a pendent equalizing-lever also supported from the transversemember and connected with the other equalizing-oar, and connectionsbetween said equalizing and brake levers.

9. The combination of a car-truck, brakeshoes for the wheels, beamsconnecting said shoes and suspended from the frame, a plurality offloating equalizing-bars also suspended from the frame, a mainbrake-lever fulcrumed on one of the bars and to which lever power isapplied to operate the shoes, means connecting the ends of theequalizingbars with the respective brake-beams, a pendentequalizing-lever and a rod connecting the equalizing-lever andthebrake-lever.

i 10. The combination of a car-truck frame having end pieces and.bolster-transoms extending across between the side pieces thereof,brake shoes suspended from the end pieces, brake-beams rigidlyconnecting theshoes of each set, a plurality of transverselyextendingequalizing-bars, links near each end of said bars to independentlysuspend said bars from the respective transoms, rods connecting the endsof one of said bars with one of said beams, a main. brake-leverfulcrumed on said bar near its center, an equalizing-lever suspendedfrom the other bolstertransom near the center thereof, and connectedwith the other equalizing-bar, and rods extending from the latterequalizing-bar to the other-brake-beam, and a link orrod connecting theequalizing-bar with the brake-lever.

11. The combination of a car-truck, outside brake-shoes for the wheelssuspended from the truck, brake-beams to which the shoes are fixed, aplurality of transversely-extending equalizing-bars supported from theframe inside the wheel-base, rods connecting each of the bars with thebeam nearest thereto and spaced apart to provide clearance for a motor,an upright main brake-lever pivotally secured to one of saidequalizing-bars near the center thereof, the power end of said leverbeing adjacent to the center of the truck, an equalizing-lever pendentfrom the frame and connected with the other equalizing-bar, aconnecting-rod from the equalizing-lever to the brake-lever. 12. Thecombination of a car truck, of brake-shoes pendent from the truck-frame,a plurality of transverse equalizing-bars suspended from the truck-frameand connected with one of the brake-sets, a brake-lever to which poweris applied, one end of which is pivotally connected to one of saidequalizingbars, an equalizing-lever depending from the frame andconnected with the other equalizing-bar, and an adjustable connectionbetween the latter lever and the brake-lever, for varying the pressureupon the two sets.

13. The combination of a truck frame, brake-beams, links supporting thebeams beneath the frame, a plurality of swinging equalizing-barssupported from the frame and connected with one of the brake-beams, abraking-lever fulcrumed on one of said bars, another lever pivotallysuspended from the frame and connected with the other equalizing-bar,and a connection attached to the brake-lever, and adj ustably connectedwith the pendent lever so as to vary the pressure as desired on the twosets of brakes.

. 14. The combination in a cartruck, of brake-beams swingingly supportedfrom the ends of the frame, brake-beams fixedon said beams,bolster-transoms extending across the frame near the middle thereof, anequalizingbarsnspended from the transom and connected by rods with eachone of the brakebeams, a main operating-lever fulcrumed on one of saidbars, an equalizing-lever suspended at its upper end from one of thetransoms, and connected to the other equalizingbar, and a rodoperatively connecting the bralie and equalizing-lever, the connectionof said rod with the one of said levers being adjustable along itslength to vary the brakepressure on the shoes.

15. The combination of a car-truck frame, brake-shoes suspended from theframe of the truck, beams to which the shoes are secured, a plurality ofequalizing-bars suspended from the frame, near the, transverse center ofthe truck, rods connecting one of the bars with one of the beams, a mainoperating brake-lever fulcrumed at its lower end upon and near themiddle of said equalizing-bar, a pendent equalizing-lever suspended fromthe frame, near the transverse center thereof, and provided with aseries of holes along its length, connections between said equalizing-lever and the other equalizing-bar, a connection between said latterbar and the other brakebeam, and a connecting-rod pivoted to thebrake-lever near its lower end and adj ustably secured to theequalizing-lever at varying points along its length by a pin or boltadapted to pass through the holes.

.16. The combination of acar=truck, out-side brake-shoes for the wheelssuspended from the frame of the truck, brake-beams to which the shoesare fixed, a plurality of transverselye'xtending equalizing-barssupported from the frame inside the wheel-base, rods connecting each ofsaid bars with each beam and spaced apart to provide clearance for amotor, an upright brake-lever pivotally secured to one of said bars nearthe latters center the power end of said lever being adjacent the centerof the truck, an equalizing -lever pendent from the truck-frame, andsecured to the other equalizing-bar, and a rod extending between saidequalizing-lever and brake-lever with an adjustable connection with oneof them whereby the pressure upon the brakeshoes may be differentiated.

17. The combination of a pivotal car-truck, a set of outsidebrake-shoes, beams connecting the shoes of each set, means to suspendthe beams and shoes from the ends of the truck-frame, an equalizing-barsuspended from supports on the frame, rods connecting the bar near itsends with the brake-beam on that end of the truck, an upright main leverfulcrumed at its lower end on said bar near the center thereof, andhaving its other end to which power is applied located near the centerof'the truck, a pendent equalizing-lever fulcrumed at its upper end to asupport on the frame andin a line longitudinally with thebrake-lever,another equalizing-bar swing ingly supported from the frame,rods connecting this bar with the other brake-beam, one rod near eitherend, means to connectthe lower end'of said equalizing-lever to themiddle of the latter-equalizingbar, and a rod connecting the said twolevers.

18." The combination of a car-truckframe, having side frames and endpieces, and centrally-disposed transoms extending between and secured tosaid pieces, brake beams and shoes suspended from said end pieces, anequalizing-bar, hangers and links to suspend the same at the ends fromsaid transo ms, rods, one near either end of said bar to connect thebrake-beam on that end of the truck therewith, a jaw-plate secured tosaid bar near the center thereof, a main brake-lever with its lower endfulcrumed in said plate and its upper end to which power is applied nearthe center of the truck, hangers or links secured to the other transom,another equalizing-bar suspended thereby, rods connecting this bar withthe other brake-beams one near either end, a jaw-plate secured near themiddle to the said equalizing-bar, and hangers secured to the transom,an equalizing-leverfulcrumed on said hangers, and connected with saidjawplate, and a connecting-rod pinned at one end to the equalizing-leverand the other main brake-lever.

19. The combination of a car-truck frame, brake-shoes for the wheels,beams to which said shoes are secured, links to suspend said shoes andbeams beneath the frame, an equalizing-bar also suspended by links, rodsconnecting the bar with one of the beams, and spaced apart to provideclearance between them' for a mot-or, a main brake-lever to one end ofwhich power is applied fulcrumed on the said bar near the middlethereof, another equalizing-bar suspended from the frame of each endthereof to suspend the same from one of the bolster-transoms, rodsconnecting the ends of said bar with one of said beams to provideclearance between them for a motor, a main brake-lever fulcrumed to saidbar near its center, and to the upper end of which anotherequalizing-bar is suspended from the other transom, rods connecting theends of the bar with the other brake -beam to provide room between themfor a motor, an equalizing-bar fulcrumed at its upper end near thecenter of the other transom, and hinged or pinned to the said secondequalizing-bar near its lower end, and connecting means'as a rod betweenthe equalizing-bar and the main lever, to simultaneously operate bothsets of brakes.

21. The combination of a car-truck frame, having end pieces andbolster-transoms extending between and secured to the side pieces of theframe, brake-shoes and brake-beams suspended from the ends of the frameoutside the wheels, equalizing-bars suspended from the transoms insidethe wheels, rods connectin g the beams with the opposite bars, andseparated to allow room between them for a motor at either end of thetruck, an operating main brake-lever fulcrumed on one bar, an

equalizing-lever pivoted to the other bar and to the transom above, anda connecting-rod extending between these two levers to operate bothbeams and the brake-shoes simultaneously.

22. The combination of a car-truck frame, brake-beams swinginglysupported from the ends of the frame, brake-shoes fixed on said beams,bolster-transoms extending across the frame near the middle thereof, anequalizingbar suspended from one of the transoms and rigidly connectedas by rods with one of the brake-beams, a main operating brake-leverfulcrumed on the said bar, to the upper end of which the brake-power isapplied, an equ alizing-lever suspended at its upper end from thefloating equalizing-bar suspended from supports on the frame and fromthe center of which the said equalizing-bar is connected near its lowerend, rods connecting the latter bar with the brake-beam on that end ofthe truck, and connecting means extending from the equalizing-lever, theconnection with one of the levers being adjustable along its length inorder to vary the pressure on the brakeshoes for either single-motor ordouble-motor trucks.

23. The combination of a car-truck frame, brake-shoes suspended from theframe of the truck, beams to which the shoes are secured, a floatingequalizing'bar suspended from the framework near the longitudinal centerof the same, rods connecting the bar with one brake-beam, a mainoperating brake-lever fulcrumed at its lower end near the middle of saidbar, and to the upper end of which brake-power is applied, a pendentequalizinglever supported on the frame near the transverse centerthereof and provided with an equalizing-bar also suspended from theframe of the truck, and to which the lower end of the equalizing-leveris pivoted, rods connecting this bar with the other brake-beam, and aconnecting-rod secured to the main lever adjustably pivoted to theequalizing-lever by means of the series of holes.

24. In a truck-brake mechanism, the combination of brake-beams, one foreach pair of wheels, shoes carried thereby, transverse equalizing-barseach connected at its ends to each beam, so as to provide room for amotor on each car-axle, the beam and bars all being adapted to besuspended from the car-truck frame, a lever connected with one bar,another lever connected with the other bar, and an adjustable connectionbetween the two le vers whereby the truck mechanism may be applied toeither a twomotor or a single-motor truck.

25. Thecombination of a car-truck, brakeshoes for the wheels, beams towhich said shoes are fixed, an equalizing-bar also suspended by linksbeneath the frame, rods connecting the bar with one of the beams, and

spaced apart to provide clearance between 1 them for a motor, a mainbrake-lever to one end of which power is applied, fulcrumed on the saidbar near the middle thereof, another equalizing-bar suspended from theframe of the truck, rods connecting this bar with the other brake-beam,and spaced apart to provide clearance between them for a motor, anequalizing-lever pivoted at one end near the middle of the latterbar andat its upper end to the framework of the truck, and a connecting-rodextending between this lever and the main brake-lever, the connectionbeing adjustable along the length of one of them.

26. The combination of a car-truck frame having end pieces andbolster-transoms eX- tending across between the side pieces thereof,brake shoes suspended from the end pieces, brake-beams rigidlyconnecting the shoes of each set, a floating equalizing-bar, links neareach end thereof to suspend the same from one end of thebolster-transoms, rods connecting the ends of said bar with one of saidbeams toprovide clearance between them for a motor, a main brake-leverfulcrumed to said bar near its center and to the upper end of whichanother equalizing-bar is suspended from the othertransom, rodsconnecting the ends of the bar with the other beam, to provide roombetween them for a motor, an equalizing-bar fulcrumed at its upper end,near the center of the other transom,- and hinged or pinned to thesecond equalizing-bar near its lower end, and a connecting-rod securedbetween the equalizing-lever and the main lever, the connection with oneof them being adjustable so as to equalize or differentiate the pressureupon the brakes, and thus adapt the brake mechanism to either single ordouble motor trucks.

27. The combination of a car-truck frame, having end pieces andbolster-transoms extending between and secured to the side pieces of theframe, brake-shoes and brake-beams suspended from the end of the frameoutside the wheels, equalizing-bars suspended from the transoms insidethe wheels, rods connecting the beams with the opposite bars, andseparated to allow room between them for a motor at either end of thetruck, an operating main brake-lever fulcrumed onone bar, anequalizing-lever pivoted to the other bar, and the transom above, and aconnecting-rod extending between these two levers and adj ustablyconnected therewith whereby the brake-pressures may be equalized ordifferentiated to suit the brake mechanism of either a two-motor or asingle-motor truck.

Signed at the city of Philadelphia, county of Philadelphia, and State ofPennsylvania, this 23d day of April, 1901.

WALTER S. ADAMS,

lVitnesses:

HENRY O. ESLING, VINCENT ANDERSON IIO

